Lubricating apparatus



2 Sheets-Sheet 1f V E. w. DAVIS El AL LUBRICATING APPARATUS Filed Junze, 19:53 9

[IN "Hill April 9, 1935.-

April 9, 1935. I E. w. DAVIS EIAL 9 6,

LUBRICATING APPARATUS Filed June 1935 2 Sheets-Shet? lli I) mu Patented Apr. 95 1935 'conporation ofvirginia v 'f Aziiiiiat i e fzt,.1933, Serial No. 6 71624 i 'icl ainis. "(01; 221-473 I Q 0111 ihverition relates geiieral lirto lubtibati ng a: I isj ct o Q r inve b t cd w a pp rat an o p trt c arly to imp o e ntrol valves for high v-pressure l b fieant compres improved lubricant coz trol valve -forhigh pres-' sure lubricating apparatuszwh-ieh issimpie inset-1 struetion, whioh may be easily operated, and. whioh will be ,Very durable; j 1 I Other objects appear from the following;

desdriptioi i, ref erehce beingv had to r the aQcm--.

panyi g diawings, in which: I

QE iguI-e I is an elev'ation of a high pressure 111 brieax t compressor and its-discharge conduit, in; which our improved valve is incorporated; v

Figure; is a longitqdinal 's e etigmal igi re a f 'agmeritaryl sectio ai.viewtake 5 is a longitudinaisectional ie The c'fifitrdl valve ifiteptioii w n S P9 3 3 9??? m t ,7 lubricant compressor whichimay of any suitable eonstruetiomtt he comp iesso illustrated base l uiupon which s ghiol f ted 'a' high g 'ess ure lubrica fitji impflg ai da'IIubriCant rjohtairier. l4;

of the conduit I and temiii at's f-iri a bquplelf {Z8 adapted tc'i be connectedsiieeessively to a 13111 rality of fittir'igsiattached to the "hearings" to be mmmated. 'rhe-eoup ers 2'2 and-'nandt e 1 pin fitting :24 ma'y be o'f conventional coristr-uc tion; suchiorexamplm'as illustrated in the'patent' to A. V. Gullborg, No. 1,307,774.? The lubricant compressor is i adapted to. operate intermittently s equired 1.0 maintain: a. predeterminel lubri cant 911655112 wiiih l i h nq d i :2

:T e c ntral. v lve; c mpris s a b y h nsqmr' qssikepmiqc is sata A ushingxwflsthmaq d at s bos 3' ther'esd o t r sb nsb m b ed 1 20mm a, alve at .5? 9? s spii s-ni s s e i-eq WY? 3%. t-sip e i rt c 'mhatst-takeii a a v the cylindrical in ow of the boss 38vand has ntainedwithin ,"a', housing. [8 h and contacting with the'h'ead 1; of .i syhtqga d ca i a sh ng n thflfiflfifififi? 241s threadedqA collarfip threaded on the pigs; :26. adjacent the bushing 48 has aibevelediaee 52 whiehisadapted to epgage a-eon plementaliy- 5 beveled end surface of a tubular hafndlefi t the other end of thejhandlebeingsimilarly Jgeveled;v

and adapted to engage the beveled-surface 5.5

on the bushing 46. "The lubricant supplied by the;

conduit 20 may thus fiowthroug'h the'pin fitting 10 2A, pipe 48 past the check valve 44 mwa' gt 58 forming the inlet for acylindrical valve-chamber A hollo wiicyli di icalvalve62 longitudinally I slidable in the valve-chamber The valve 6.? is];

latter and a washe ss-the latter b in held 7 place by the flare end portion f. the-valve carhole 'l d whiehis in eommuiiicatiqh withthe valve mambe ea throughapoi't JIBI {A compressioneoil, spring 18 is I one end abutting Iagai'iist the lower. faceof thq washer 63 andtlieothe'r eiid restingf'upohfa plug 82 thifaded iii the end, (if the oss" 3 8f, the. plilg japan; of'liigs 92, 94' termed rit gmn -g ith s,

h lve ea i 'n' a th ndb e: s as. An jus ab e S 19 is th adedl n he and st an is aaaptejd tonne. lock d m s't positih by a a filitfQB. The end of the set-screw is iadaptegi o C ntact vit-h' h o i ided' endnf a pi n 491 I00, whieh is freely.v reeipi oeablein thei-Cyl dricaiboi'e of a bushing in'fthe end of thebpss v34''. 1

1 h b n 21-021m rve t k nsiim itsilowr e d pre sin washer. lfltiasa n it plurality of :packi g iwashei s 1116 which pm It? leakage around va; sterhhllflfi; "The I as one and pr jecting infl h l bl hmgs other end fifojecting into the ifalve bh mbe riepfiq. V; The Valve 62 is,adaptedfto"closean ou letfport joflwhich bofmhiuhicate's with a 19 re ror edun h tbssi s i i f V A spring pressdball checks/awe [I14 en 4 s eafilwlef ed thestdewe ??E1") t 1 ILII I AJDING PA U L Y fii'nest arid; Reuben Wed ebe 'g', Qhica'go;

111., -assi'gnors, bs inesne assignments, to a Stewart- Warner Corporation, Chicago, 111;, a A

46 is threaded in the biishins ,2 arid at its outei';

a t h -ia t'efh s e tch fihead wbf e v 'slidin'g ly engagesthe eyliridtical walls 0fv the valve 1 ch b r' he c ri hwi an a a ly d il 'eql having a cylindrical eitensionflfl'p tojectii g with; 3d

, bearing to belubricated'the flow of lubricant to.

the bearing may easily be controlled bydepressing the handle 86 (swinging it clockwise, Figsg'l and 2), whereupon the adjustable screw 96 will move the plunger I downwardly and through the stem II 8, depress the valve;carrier:64 and valve 62 downwardly against the force of the i -,f orce the lubricant into the bearing. This boost- :e'rcom'prisesa cylinder I84 threaded in the valve spring 18, V

As soon as the valve uncovers the port I I0, lu-

bricant will flow from the conduit 20 through "the pipe 46 past the check valve 44into the valve chamber 60. It will be noted that the external. diameter of the valve 62, is slightly less than the diameter of the valve chamber 60; so that the" lubricant within the chamber 60as well as in" the bore'80 will normallybe underfpress'ure.

- The lubricant pressure within the chamber 60 will-'normally'hold the valve 62 pressed tightly against the surface of the valve chamber 60 adjacent theioutlet "I I0. The rate of flow of lubricant through the control valve may be regulated with extreme nicety," due to the fact that the valve "62 asfit is depressed uncovers portions of the outlet p ortfl H0 ofprogressively increasing cross sectional area per unit of distance the valve is depressed. Since the stem I08 is of relatively small diameter the pressure ofthe lubricant on the, lowerend vthereof will have but little effect,

and the force resistingopening of the] valve-will;

be contributedsubstantially wholly by the spring 18. The valve may thus be opened to any desired extent andheld in such open position with ease; this manner fthevaIve of our construction distinguishes from mostof'thefvalves at present usedpsince in thelatterthe valve is operated against the lubricant pressure, which, being variable, makes it difficult for the operator partially to open the valve to a predetermined position. 'The control valve shown in"Eigs-.5', 6, and 7 is generally similar to. that abovedescribed, and

r we have thereforeapplied similar reference char acters' to parts thereof which correspond closely to those previously described. j J j i "The valve comprisesa body I30 which has an opening I321intowhich abushing I34 isthreaded,

the ing havi g apinffitting I36 se thereto for connection with. the di m duit of the lubricant compressor. The opening I 32 communicates with anaxial bore I 38 formed in the valve body' I through a drilled passageway I40. inwardly extending $1161.11: der "I42 directlybeneath' the bore. I38 forms a seat'for a poppet valve I44. 7 The .valve "I44 is formedinte fally with a plunger I46. A flanged leather I48 has its-cylindrical portion engaging the plunger I 46 and its flange portionclamped f against a shoulder150by a gland I52, the latter being'pr'essed againstjthe flanged leatherby-a sleeve-I54 threaded in'the body I30. v A cap I56 is threaded in the end of the plunger ma and hasa flange I53 against which one end f. of a compressionspring"TIBO'abuts,the lower end of the spring resting upon the gla ndfll52. A

' shortfltubular valve I62is secured about the lower cylindricalportion I64 ofthe plunger I 48, being held againstappreciable movement on this cylindrical portion by 'a'flanged end piece I66 thread.- ed to the cylindrical'portion" I64. Theend' piece I66 has a kerfed small diameter extension I10 which is guided in an axial bore formed in a plug I12 threaded in the body I30. The valve I62 is slidable and rotatable in a cylindrical valve chamber I14 and normally closes an outlet port I16.

A" spring pressed ball check .valve" I 18 engaging a seat I'prevents return flow iromthe whip end discharge conduit 26 to the outlet port I16, the 'valve being'located in a'bore I82.

A pressure booster is provided to raise the lubricant pressure in the whip end discharge conduit 26 whenever the pressure of the lubricant supplied by the compressor is insuificient to body/I30 andhaving a cylindrical bore I86. A cup leather piston I88 is freely reciprocable in said bore,..thec up leather thereof being secured to a backing and guide member I 90. The end of the cylinder bore I86 is closed by a cap I92 which is internally threaded to receive a threaded the discharge20 of a high" pressure lubricant compressor, and the coupler 28 having been connected to a fitting' attached to a part to be lubricated, lubricant may be, supplied to the hearing by depressing the handle 86 (swinging it clockwise, Fig. 5) whereupon the adjustable set screw .96 willfengage therounded end of the cap I56 and depress the plunger I46, first opening the poppetlvalve I44 and thereafter sliding the "hollow cylindrical valve I60 downwardly-'suflicient to uncover-the outlet port 115.: Thereupon lubri-" cant will flow past the valves I44, "I62, and check valve I18v to the bearingwtherate of flow being accuratelyv controlled by? the extent of depression of thehandle 82.

If the bearing is of such'high resistance that the lubricant does not readily flow into it under the pressure developed by the'lubricant compressor, thepressuredn .the 'whip'end hose ,26

may be raised'by means, or the booster. The

handle I96 of the booster piston isunscrewed and the valves I42, I62 then opened; whereupon the lubricant pressure will force. the piston I88; I 90'to the right (Fig. 5) in thecylinder I86 until the member I90 ,of the piston abuts against the stem'l94. 'I'hereafter, by screwing the stem I94 inwardly an extremey high pressure may be developed "Within the cylindrical bore I86 which is, of course, in communication with the whip end discharge conduit 26, so that this excess pressure will. be exerted upon the bearing toclear the obstruction which has prevented the flowof lubricant to the bearing. l I

While we have shown and described'particular embodiments of our invention it will bereadily understood by those skilled inthe art that variations may be made in the constructions disclosed without departing from the 'basic features of our invention. We therefore do not wish to be limited to the precise constructions disclosed but wish to includewithinthe scope of our-invention all 25v apparatus, comprising a body having a,cylindrisuch modifications and variations which wlllreadily suggest themselves. What we claim as new and desire to secure by United States Letters Patent, is:

g 1. In a control valve for high pressure lubricating apparatus, the combination of a valve body inletport to close said port, a hollow cylindrical shell mounted for rotation and limited axial movement relative' to said plunger; said hollow cylindrical-valve being positioned to close said outlet port when said poppet valve is closed and to uncover said outlet port after said poppet;

valve has been moved from its seat, and a manually operable-lever cooperating ,with the external end of said plunger to move the latter'and thereby operate said valves. 1 i

2. A control valve for high pressure lubricating cal valve chamber and provided with inlet and outlet passageways communicating with said chamber, a hollow cylindrical valve reciprocable within said chamber and adapted to close'said outlet passageway, a carrier for said valve, a spring cooperable with said'carrier to hold said valve over said outlet passageway, a plunger of small diameter projecting into saidjchamber from the exterior of said body, and a manually operablelever pivotally connected with said body J j f;

and having a part engageable with the external end of said plunger thereby to project said plunger intosaid chamber and to cause it to engage said .carrier and thus to move said valve relative to said outlet passageway against thefor'c of said spring.

3. A flow-control valve for high pressure In bricating apparatus comprising a body having a bore extending therethrough, saidbody having a valve seat intermediate its ends, a valve en'- gageable with said seat, a stem for saidvalve, a spring operativeresiliently to hold said valve upon its seat, an outlet'port beyond said seat, 15 v and a slide valve connected to said firstvalve and operable to control the flow of lubricant through said outlet port.

l. In a control valvefor high pressure lubricatf ing apparatus, the:comb ination of a body having a bore extending therethrough, a plug closing one end of said bore, a plunger reciprocable in said bore, and projecting from the end thereof opposite said plug, meansto prevent escape of lubricant from said bore around said plunger, said bore having a part forming a valve chamber with an outlet port, an outwardly opening check valve normally closing said outlet port a hollow cylina drical valve substantiallythediameter of said "valve chamber and reciprocable therein, and

manually operable means for increasing the 111- bricant pressure on the discharge side of said outlet checkvalve. v

"ERNEST W. DAVIS.

REUBEN .WEDEBERGQ I Y 

